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Apr.  2021
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MA Lisha, XIE Wenping, TIAN Fei, YIN Yi, SHAN Qi, ZHENG Guangming, LI Hengxiang. Bioaccumulation and human health risk assessment of polychlorinated biphenyls (PCBs) in farmed oysters along Guangdong coast[J]. South China Fisheries Science, 2021, 17(2): 11-19. DOI: 10.12131/20200209
Citation: MA Lisha, XIE Wenping, TIAN Fei, YIN Yi, SHAN Qi, ZHENG Guangming, LI Hengxiang. Bioaccumulation and human health risk assessment of polychlorinated biphenyls (PCBs) in farmed oysters along Guangdong coast[J]. South China Fisheries Science, 2021, 17(2): 11-19. DOI: 10.12131/20200209
shu

Bioaccumulation and human health risk assessment of polychlorinated biphenyls (PCBs) in farmed oysters along Guangdong coast

  • 1.

    Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences/Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province/Laboratory of Quality and Safety Risk Assessment for Aquatic Product (Guangzhou), Ministry of Agriculture and Rural Affairs, Guangzhou 510380, China

  • 2.

    South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences/Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China

  • 3.

    South China Sea Institute of Oceanology, Chinese Academy of Sciences/Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China

  • 4.

    Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China

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  • Received Date: October 12, 2020
  • Revised Date: December 14, 2020
  • Available Online: January 19, 2021
    Graphical Abstract
    • Abstract
  • We analyzed 30 congeners of polychlorinated biphenyls (PCBs) in the farmed oysters (Crassostrea rivularis, C. hongkongensis, C. gigas) from the main aquaculture areas along Guangdong coast (Shantou, Shanwei, Shenzhen, Zhuhai, Jiangmen, Yangjiang and Zhanjiang) by using gas chromatography mass spectrometry (GC/MS). The detection rates of PCBs in oysters and their potential risks to human health were also evaluated. Results show that PCBs had a detection rate of 97.6% in the farmed oysters along Guangdong coast. Concentration of PCBs in oysters ranged from nd to 8.62 ng·g−1 (wet mass), with an average value of (0.57±1.23) ng·g−1. The highest PCBs concentration was found in Shenzhen, followed by Zhuhai, Shantou, Yangjiang, Jiangmen, Zhanjiang and Shanwei. The congeners of PCBs and their compositions were similar in different locations, showing that Hexa-PCBs and Penta-PCBs are the most abundant components in oysters. Compared with the shellfish in other coastal waters at home and abroad, the concentration of PCBs in this study is at a lower level. Bioaccumulation of PCBs in farmed oysters is lower than the limited residue levels of PCBs in National Food Safety Standard Limits of Pollutants in food in China and the hygienic standard for shellfish in European Union. The carcinogenic risk and hazard quotient of PCBs in oysters are less than the threshold value of the US Environmental Protection Agency, indicating that the carcinogenic risk of indicator PCBs in Guangdong oysters is at an acceptable level for consumers.
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